Some notes on elliptic equation method

Details Some notes on elliptic equation method Some notes on elliptic equation method

2011-05-31

arxiv.org/abs/1105.6175v1

Nonlinear Sciences

Exactly Solvable and Integrable Systems

Scientific paper

Elliptic equation $(y')^2=a_0+a_2y^2+a_4y^4$ is the foundation of the elliptic function expansion method of finding exact solutions to nonlinear differential equation. In some references, some new form solutions to the elliptic equation have been claimed. In the paper, we discuss its solutions in detail. By detailed computation, we prove that those new form solutions can be derived from a very few known solutions. This means that those new form solutions are just new representations of old solutions. From our discussion, some new identities of the elliptic function can be obtained. In the course of discussion, we give an example of this kind of formula.

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